Omega Products OM-USCAN Installation Manual

User’s Guide

http://www.omega.com

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OM-USCAN SERIES

Datalogger

1

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2

Contents

A
B
C
D

1.

2.

3.

Datalogger Construction 4
Specifications 5
Interface Specification 6
Accuracy of Measurement 7

System Requirements 9

Installing the Software 9

Installing the Datalogger 10

4.8

4.81

4.82

4.821

4.822

4.823

4.83

4.84

4.9

4.91

Single-Channel Graphic 27
Smooth and Zoom 29
Display Mode 30
Trace Settings 31
Axis Settings 31
Examples 32
Inspect 33
Save ASCII 34
Twin-Channel Graphic 35
Mathem. Combinations 36

4.

4.1

4.2

4.3

4.4

4.5

4.6

4.61

4.62

4.63

4.64

4.65

4.7

Software 11
Starting Up the Software 11
Com Port 12
Test & Clear Data 15
Put to Sleep 16
Datalogger Identification 17
Setup 20
Active Sensor 21
External Sensor 21
Sampling Rate 21
Delay 22
Scanning 24
Read Out 25

5.

6.

Troubleshooting 37

Language Editor 38

Index of Key Words 45

3

A Datalogger

Construction

Connection socket for interface and external sensors. We recommend that
the protective cap is screwed on to protect the contacts.

Protective Cap

+ Battery -

2/3 AA, 3V lithium battery
O-ring seals
Battery cover
Retaining ring BN823
Cap contents

4

B Specifications Internal sensor Precision high-temperature conductor (NTC)

Range: -22°F to 158°F (-30°C to 70°C)

External sensor Precision high-temperature conductor (NTC)

Range: -40°F to 248°F (-40°C to 120°C)
Interchangeability +/- 0.36°F (+/- 0.2°C) in the range from
32°F to 158°F (0°C to 70°C)

Memory depth 64k words, 16 bits

Sampling interval Single-channel: 10 seconds to 20 minutes in 9 steps

Twin-channel: 20 seconds to 40 minutes in 9 steps
Scan Mode: 16 seconds scanning interval

Recording period 3.87 days to 454.5 days

Time base Quartz with ± 5 minutes/year deviation

Interface RS232 with 4800 Baud transmission speed

Data format ASCII or binary (selectable)

5

Storage: 2/3 AA lithium battery, replaceable by the user.

Minimum life 2.5 years at 10 sec sampling rate.
In Sleep Mode 9 years (77°F / 25°C)

Recommended battery:
e.g. Sanyo Lithium CR 17335S, 3 V, 1700 mA at 77°F / 25°C
Working range: 32°F to 158°F (0°C to 70°C)

-40°F to 185°F (-40°C to 85°C)

Case: Stainless steel, watertight IP68, up to 10 bar pressure

above atmospheric

Shock: resistance: up to 300 g maximum

C Interface Specification Interface: Connects to PC by 9-channel D-Sub sleeve plug

RS232: Baud rate: 4800 Baud, 8 bits, 1 stop bit, no parity

Scan Mode: 300 Baud. 8 bits, 1 stop bit, no parity

Batteries: 9 V E-Block (IEC: 6F22) alkaline or similar

Battery life 20 hours
Can run from external power source via 9 V universal
power unit regardless of the polarity.

6

D Accuracy of Measurement

2.88°

2.16°

1.44°

0.72°

0°

-0.72°

Devation (°F)

-1.44°

-2.16°

-2.88°

-22° - 4°

14° 32° 50° 68° 86° 104° 122° 140° 158° 176° 194° 212°F

Measuring Temperature

7

The NTC measuring sensor is accurate to ± 0.36°F (±0.2°C). Due to the negative
temperature coefficients, the resistance increases exponentially at higher temp­eratures, and consequently even the high resolution of the data transducer is no
longer sufficient to keep consistently to the accuracy of ± 0.36°F (±0.2°C).

The diagram shows how
resolution increases as
temperature rises.

216

180

At -22°F (-30°C), the
resistance is 177kOhm and
at 248°F (120°C) only

144

0.38kOhm. A change of
temperature of 18°F

108

(10°C) at -22°F (-30°C)

Temperature °F

72

causes a change of
resistance of 80kOhm and

36

at 248°F, only 0.057kOhm.

8

1. System
Requirements

IBM PC compatible PC 80386/33 or higher with minimum 8 MBytes RAM
(Pentium with 16 MBytes recommended):

- SVGA graphics board, 640x480

- At least 5 MBytes available space on the hard disk

- a free communication port: COM1, COM2, COM3 or COM4 (RS232 port)

- Mouse to run the program easily

- Microsoft Windows 3.1 / Windows 95 / Windows 98 / Windows NT 4.0.
If using Microsoft Windows 3.11, please use the updated "Serial.386 Driver for
Windows/TM for Workgropups Rev. Date 3/94".

2. Installing the
Software

Windows 3.1x:
Start Windows. Open Program Manager and click on "File". In the "File"
window, select "Run ...". Now insert the program floppy disk into drive A or B.
In the "Run ..." command window write "A:setup" or, correspondingly, "B:setup"
and confirm the entry with the "OK" button. If you are not selecting any other
directory, confirm the directory recommended. Installation now proceeds
automatically.

Windows 95 / 98 / NT4.0:
Start Windows. Click on "Start" and choose "Run". Insert floppy disk into drive
A or B. In the "Run" command window write "A:\setup.exe"or "B:\setup.exe"
and confirm the entry with the "Enter" key. If you are not selecting any other
directory, confirm the directory recommended.
Installation now proceeds automatically.

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3. Installing the

Datalogger

The datalogger can only be connected to the computer via the interface
supplied. The interface ensures fast, reliable communication between the
datalogger and the computer and does not take power from the datalogger
battery. Connect the interface to a free Com Port using the cable supplied. Note
the Com Port number to enable you to select it in the software. If your Com Port
has a 25-channel plug, you will need a 25 to 9-pin D-Sub adapter, obtainable from
any computer retailer.

N.B.: When you have connected the interface to the computer, switch the
interface ON. The function is displayed by the red LED. Be sure to switch on the
interface before connecting the datalogger to the interface. If you have already
connected the datalogger by mistake, remove it and reconnect it with the
interface switched on. If you do not follow this sequence, the datalogger
battery is drained unnecessarily and communication between the computer and
the datalogger is not possible. By following the setup sequence described, the
datalogger is switched to its normal state when connected, and is thus ready for
communication. In addition, the datalogger is supplied with power by the
interface to meet the requirements of the interface.

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4. Software

4.1 Starting Up the
Software

When installing the software, the software opens a new program group in your
Windows program with its own icon. Start the software by clicking twice on the
icon. Once the software has been loaded, the software will display the following
opening menu:

µScanT

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4.2 Com Port

First select the Com Port to which you have connected the interface. To do this,
move the mouse pointer to the appropriate "utility" key. This key will show you
a new key "Change Com Port". Move again the mouse pointer to the "Change
Com Port" key and activate the port by clicking with the mouse.

12

Save the selected Com Port by clicking on the "Save" key.

13

Return to the main window and activate the new Com Port by moving the mouse
cursor to the "Com Port?" key and click on with the mouse.

An error occurs, if the port is in use
by another program or device. Please
repeat the steps again and select the
correct port.

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4.3 Test & Clear Data By clicking with the mouse on the “Test & Clear” key, you will start a datalogger

test program, which tests the internal function of the datalogger. This tests and
then clears all the memory cells. Never use this program after capturing data with
the datalogger, because it would then be lost before evaluation. Start the
program by clicking with the mouse on the “Test & Clear” key. The display shows
the test status. Exit the test by clicking on the “Return to Main” key.

15

4.4 Put to Sleep If you do not use the datalogger for some time, select the Sleep Mode to conserve

the battery. When in Sleep Mode, the datalogger uses less than 17 µA. Start this
program by activating the “Put to Sleep” key in the Main Menu and pressing this
key again in the Submenu. Then disconnect the datalogger from the interface
and put it aside.

To awake the datalogger again,
reconnect it to the interface. The
connection process reactivates the
datalogger ready for communi­cation.

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